Here's
how I made the mouse in the Nocturnal Creations logo. Thank you
Scott for letting me put this tutorial online :)

First I created a new document, 230 x 300 pixels, white background.

Then I selected the Rounded Rectangle tool
to draw the shape of the mouse. Call this layer MOUSE.
Set #595959 as your foreground color and drag out the selection
with these
settings. I named this layer MOUSE.

Your image should now look like the image shown in step 1.

Then
activate the Direct Selection tool .
Click the center of your shape to highlight the path, and then click
along the path so that you can see the anchor points.

Then
activate the Add Anchor Point tool found by right clicking on the
pen tool in the toolbar .

Then add a new anchor point like shown in step 3.

Now
move the cursor slightly to the right of the new anchor point. That
will make it turn into the Direct Selection tool ()
and drag the anchor point to the right like shown in step 4.

Then
do the same to the anhor point just above and below the new anchor
point so that your image look like the image shown in step 5.

Now
select the Convert Point tool .
We have to adjust the anchor points above and below the new anchor
point a little bit to make the curve nice and smooth.
Experiment a bit by draging the handles until you think the curves
look the way you want them.

Your
mouse shape should now look something like the image shown in step
7 :)

Ok
- time to add some basic layer styles to the mouse.

I added some drop shadow with these
settings.
Some inner glow with these
settings.
Anf some bevel and emboss with these
settings.

Ok
- time to make some highlight on the mouse.
Create a new layer above the MOUSE layer and call it HIGHLIGHT.

I painted
the highlight using the Paint Brush tool .
I used a soft 65 pixel brush having white as the foreground color.
Just click and drag the brush until your image look similar to mine.

Still
at the HIGHLIGHT layer Ctrl + click the MOUSE layer to load its transparency.